//
//  CK_MenuViewController.m
//  MenuDemo
//
//  Created by liman on 16/4/14.
//  Copyright © 2016年 liman. All rights reserved.
//

#import "CK_MenuViewController.h"
#import "UIImage+ImageEffects.h"
// 抽屉展开的程度
#define kMenuLeftWidth [UIScreen mainScreen].bounds.size.width * 0.7

@interface CK_MenuViewController ()<UITableViewDataSource, UITableViewDelegate>


@end

@implementation CK_MenuViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // 手势
    UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(panMenuWithPanGesture:)];
    [self.view addGestureRecognizer:pan];
    
    
    
    // Do any additional setup after loading the view.
}


#pragma mark - 判断当前菜单是否展开

- (BOOL)isShowing {
    if (self.centerViewController.view.transform.tx > 0) {
        return YES;
    }
    return NO;
}


#pragma mark - 初始化方法

static CK_MenuViewController *CK_menuVC = nil;
+ (instancetype)instanceWithLeftViewController:(UIViewController *)leftVC CenterViewController:(UIViewController *)centerVC {
    @synchronized(self) {
        if (!CK_menuVC) {
            
            CK_menuVC = [[CK_MenuViewController alloc]init];
            // 设置window的rootViewController
            [UIApplication sharedApplication].keyWindow.rootViewController = CK_menuVC;
            // 设置属性
            CK_menuVC.leftViewController = leftVC;
            CK_menuVC.centerViewController = centerVC;
            // 添加子视图控制器和子视图
            if (leftVC) {
                [CK_menuVC addChildViewController:leftVC];
                [CK_menuVC.view addSubview:leftVC.view];
            }else {
                [CK_menuVC setupLeftViewController];
            }
            if (centerVC) {
                [CK_menuVC addChildViewController:centerVC];
                [CK_menuVC.view addSubview:centerVC.view];
            }
        }
    }
    return CK_menuVC;
}


#pragma mark -  默认的菜单视图

- (void)setupLeftViewController {
    self.leftTableView = [[UITableView alloc]    initWithFrame:CGRectMake(-kMenuLeftWidth, 0, kMenuLeftWidth, self.view.frame.size.height) style:UITableViewStylePlain];
    // 设置数据源
    self.leftTableView.dataSource = self;
    // 代理
    self.leftTableView.delegate = self;
    
    UIImageView *backImageView = [[UIImageView alloc]initWithFrame:self.view.bounds];
    UIImage *image =[UIImage imageNamed:@"beijing1.jpg"];
    [backImageView setImage:[image applyDarkEffect]];
    self.leftTableView.backgroundView = backImageView;

    
    
    self.leftTableView.separatorStyle = UITableViewCellSelectionStyleNone;
    self.leftTableView.scrollEnabled = NO;
    [self.view addSubview:self.leftTableView];
}


#pragma mark - UITableViewDataSource

// 数据源代理方法
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
         return self.menuArray.count;
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
    return 1;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    static NSString *reuserID = @"cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:reuserID];
    if (!cell) {
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:reuserID];
    }
    cell.backgroundColor = [UIColor clearColor];
    cell.textLabel.textColor = [UIColor whiteColor];
    
    [cell.textLabel setFont:[UIFont systemFontOfSize:22 weight:4]];
        cell.textLabel.text = self.menuArray[indexPath.row];

    return cell;
}




// menuArray的setter方法
- (void)setMenuArray:(NSMutableArray *)menuArray {
    if (_menuArray != menuArray) {
        _menuArray  = nil;
        _menuArray  = menuArray;
        [self.leftTableView reloadData];
    }
}


#pragma mark - UITableViewDelegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    // 取消选中状态
    [tableView deselectRowAtIndexPath:indexPath animated:YES];
    // 代理 传值
    if ([self.menuDelegate respondsToSelector:@selector(didClickMenuIndex:Title:)]) {
        if (indexPath.section == 0) {
    
        [self.menuDelegate didClickMenuIndex:indexPath.row Title:self.menuArray[indexPath.row]];
            
        }
    }
    // 关闭抽屉
    [self hideLeftViewController];
}


#pragma mark -  获取抽屉方法

+ (instancetype)getMenuViewController {
    return CK_menuVC;
}


#pragma mark - 左侧菜单

// 展示左侧菜单
- (void)showLeftViewController {
    // 动画展开
    [self showLeftViewController:0.7];
}
- (void)showLeftViewController:(CGFloat)duration{
    //        在打开抽屉时 把主视图的交互关了
    [self.centerViewController.view setUserInteractionEnabled:NO];
    [UIView animateWithDuration:duration animations:^{
        self.centerViewController.view.transform = CGAffineTransformMakeTranslation(kMenuLeftWidth, 0);
        self.leftViewController.view.transform = CGAffineTransformMakeTranslation(kMenuLeftWidth, 0);
        self.leftTableView.transform = CGAffineTransformMakeTranslation(kMenuLeftWidth, 0);
    }];
}
// 关闭左侧菜单
- (void)hideLeftViewController {
    [self hideLeftViewController:0.7];
}
- (void)hideLeftViewController:(CGFloat)duration {
    //        在关闭抽屉时 把主视图的交互开了
    [self.centerViewController.view setUserInteractionEnabled:YES];
    // 动画关闭
    [UIView animateWithDuration:duration animations:^{
        self.centerViewController.view.transform = CGAffineTransformMakeTranslation(0, 0);
        self.leftViewController.view.transform = CGAffineTransformMakeTranslation(0, 0);
        self.leftTableView.transform = CGAffineTransformMakeTranslation(0, 0);
    }];
}


#pragma mark -  手势控制抽屉

// 静态变量保存初始状态
static CGPoint begin;
static CGAffineTransform transform;
- (void)panMenuWithPanGesture:(UIPanGestureRecognizer *)pan {
    // 位移量
    CGPoint translatePoint = CGPointZero;
    // 开始手势时的位置
    if (pan.state == UIGestureRecognizerStateBegan) {
        begin = [pan locationInView:self.view];
        transform = self.centerViewController.view.transform;
    }
    // 手势过程中的位置
    if (pan.state == UIGestureRecognizerStateChanged) {
        CGPoint end = [pan locationInView:self.view];
        translatePoint = CGPointMake(end.x - begin.x, 0);
    }
    // 手势结束时的位置
    if (pan.state == UIGestureRecognizerStateCancelled || pan.state == UIGestureRecognizerStateEnded) {
        if ([pan velocityInView:self.view].x > 0) {
            // 动画设置动画时长
            [self showLeftViewController:0.13];
        }else {
            [self hideLeftViewController:0.13];
        }
        return;
    }
    // 手势过程中，对视图进行位移
    if(self.centerViewController.view.transform.tx >= 0 && self.centerViewController.view.transform.tx <= kMenuLeftWidth) {
        self.centerViewController.view.transform = CGAffineTransformTranslate(transform, translatePoint.x, 0);
        self.leftViewController.view.transform = CGAffineTransformTranslate(transform,translatePoint.x, 0);
        self.leftTableView.transform = CGAffineTransformTranslate(transform, translatePoint.x, 0);
    }
}


#pragma mark - tableView HeaderView

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    return 66;
}
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
return 200;
}


-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{
     UIView *view= [[UIView alloc]initWithFrame:CGRectZero];
    if (section == 0) {
        view.frame= CGRectMake(0, 0, kMenuLeftWidth, 200);
        UIImageView *imgView = [[UIImageView alloc]initWithFrame:CGRectMake(30, 80, 100, 100)];
        imgView.image =self.img;
        imgView.layer.cornerRadius = 50;
        imgView.clipsToBounds = YES;
        imgView.contentMode = UIViewContentModeScaleAspectFit;
        UILabel *nameLabel = [[UILabel alloc]initWithFrame:CGRectMake(155, 122, 80, 40)];
        nameLabel.text = self.userNameStr;
        nameLabel.textColor = [UIColor whiteColor];
        nameLabel.textAlignment = NSTextAlignmentCenter;
        nameLabel.font = [UIFont systemFontOfSize:22];
        [view addSubview:nameLabel];
        [view addSubview:imgView];
        
    }
    
  return view;
}












@end
